150.97% is the change from 257 to 645
Calculation steps:
[( 645 - 257 ) ÷ 257] x 100 = 150.97%
Formula
Percentage change = [(645 - 257) / 257] x 100
Subtract the new number by the original number
645 - 257 = 388
388 ÷ 257 = 1.509727626459144
1.509727626459144 x 100 = 150.97%